General Information

Created: 2014-01-22 13:31:31
Modified: 2014-02-11 14:41:09

Active: No
Responsible Countries: Canada,
Timezone:UTC/GMT -05:00 hours
Vegetation Type:Tundra
Responsible Person:Barry Goodison

Two holes, second hole instrumented in 1989.

Permafrost present, thickness not known.

Additional information on disturbances: No obvious strong natural or man-made heat sources.  There is an aviation navigation aid on the adjacent hilltop, about 80m distant above the site.  This structure is about 40m across, round and consists of a round building with a series of many small antenna structures in white enclosures on the edge of its roof.

MEAN ANNUAL GROUND TEMPERATURE AT OR NEAR DEPTH OF ZERO ANNUAL AMPLITUDE (°C) - report  value for most recent year or 12 month interval

This hole does not reach zero annual amplitude.

MAGT at 5.0m (deepest) for 1999 was –7.01 and -7.07C respectively for the two holes.

Range of temperatures during 1999 at 5.0m depth were for Cable HT141, -3.81 to -10.81 (convex ground) and for Cable HT142, -4.13 to -10.34C (slightly concave ground).

Depth of zero annual amplitude (or depth of measurement reported above)  (m)

Depth of measurement reported above is 5.0m.

Year or 12 month interval for mean reported above

Year 1999

Range (if applicable) of mean annual ground temperature over observation period (°C)

Range of Mean Annual Ground temperatures for 5m depth between 1988 and 1999 was from -9.9C to -7.0C, with the warmest temperatures in 1999.

NAME AND LOCATION OF CLOSEST CLIMATE STATION (latitude, longitude, and distance from borehole, km) - provide (if available) mean monthly air temperature and snow depth of reporting interval for mean annual ground temperature

Iqaluit A   (airport identifier YFB)

63deg 45min N, 68deg 33min W, Elevation 33.5m a.s.l.

-9.4 C for Year 1999




Air temperature: Yes [X] No [ ]    Snow thickness: Yes[ ] No[X]   Density: Yes [ ] No[X]

Air temperature at 1.5m ht. is measured every minute, and the 3-hourly average is reported.

Depth:5 m
Drilling Angle:90 °
Deepest Sensor:5 m
Date Drilled:01. Jan 1988
Distance From Road:200 m
Type:Natural: Frobisher Bay (250 km deep, 35 km wide, tides up to 9 m high where Iqaluit is built. Ice-free season: Aug1-Nov10, broken or active ice: May-Jul, Nov-Dec.)
Distance From Heat:1200 m
Other Disturbance:Anthropogenic: town (apartment buildings)
Distance From Heat:1300 m
Slope:2 °
Aspect:0 °
Permafrost Zone:Continuous
Landform:The site is a rocky landscape at the south end of Baffin Island. The local hills are on the order of 200m high, with steep slopes common. The site is within 1 km of the tidal flats of Frobisher Bay. Due to the very high tides, this inlet has a reduced ice-covered season.
Lithology:The site is on massive bedrock (biotite gniess) overlain with a thin till veneer. Soil is relatively well-developed in the area and vegetation, an upland tundra heat, is abundant in the vicinity. (Taken from a file note by John Jacobs or Memorial University of Newfoundland).
Morphology:On North slope of a local hill. Total drop from top to site estimated 20m, from site down to valley bottom, additional 25m. Slope as described above, near-zero between cables, otherwise about 4%, or 2.3degrees.
Access Timeseries
Bibliographic References
Jacobs, J.D., Unpublished note on temperature trend in the 5m depth temperature at Iqaluit, 1988 to 1995.

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Longitude:-68.475278 °
Latitude:63.470278 °
Elevation:109 m
Meta Data Completeness
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